July 8, 2014
Interesting from an advertising stand-point
I might be wrong, but I believe this is from the late-1950s. The commercial features a married couple (WITH SEPERATE BEDS, despite Mary Kay and Johnny having the same bed during the 1940s, separate beds were the norm for most 1950s TV projects), who talk to each other about Alpha Bits cereal. The interact as if they were TV show characters, still a somewhat novel idea in the late-1950s (though I've seen examples of this dating back to at least the early 1950s, it became more common during the late-1950s/early-1960s).